Fire-rated sealing and fire stopping in Hanwell, Greater London
Work needed on a service penetration in Hanwell? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Service penetrations left open after M&E works
- Seals disturbed by maintenance and left open
- Expanding foam used as fire stopping
Fire stopping in Hanwell
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Keeping the joints sound
Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. We suggest:
- Leave fire sealant to cure fully before covering it
- Arrange inspection before areas are covered up
- Settle who seals which penetrations at the start of a project
- Check risers and ceiling voids after each round of works
Don’t patch a fire-rated seal with anything outside its tested detail. A repair should use the original product, installed the same way.
Ask every contractor who works in risers or voids to report openings they create. Small habits like this stop openings building up.
Fire stopping in Hanwell
Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We hold no third-party fire-stopping installer certificate and we’d rather say that up front. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. Most enquiries involve hidden openings found during inspections and service penetrations left open after M&E works, across small duct penetrations where the tested detail allows, pipe penetrations and linear gaps at wall heads. A single leaking joint is often how a building in Hanwell first comes to us: we look at the rest while we’re there and tell you what we find.
London has many occupied offices, blocks and mixed-use buildings where services are added and rerouted all the time. Each service penetration gets fire-rated or intumescent sealant if that’s what is specified, laid to the product’s tested arrangement.
We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.
- Where
- Hanwell (W7, W13, UB2)
- Region
- Greater London
- Guarantee
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
On site: what to expect
Site rules come first: signing in, inductions and any permit to work. With the paperwork done, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. All of Greater London is in the ULEZ, and kerbside space in Hanwell can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.
- We start with your penetration schedule, drawings or specification.
- Access, permits and the order of areas are agreed with the site team.
- We compare every service penetration with its tested detail before sealing.
- Unsuitable material is removed and the opening cleaned.
- Backing and fire-rated sealant are installed to the detail and tooled.
- Anything outside the detail is reported to you rather than sealed.
What we need from you
- Send asbestos survey details if the building is pre-2000
- Point out any areas we must not close
- Send any specification or drawings in advance
Getting a fixed quote
To get a fixed quote, give us a call on 01277 525 020 or email drawings and photos with the site address and an outline of the work. You can also send details through our quote form.
Related advice
Places near Hanwell
Also in Hanwell
Do you need fire stopping in Hanwell?
Physical damage is another reason seals stop doing their job. Seals get knocked during maintenance, cut back to add a cable or pulled out when services are swapped, and the repair is often skipped.
Common reasons buildings call us in:
- Unsealed joints where partitions meet the slab
- Seals that don’t match their tested detail
- Non-fire-rated filler around services
- Unsealed openings around new pipes and cables
On estates like Chadha Industrial Estate, 0.6 miles south of Hanwell, the wall between office and warehouse is often fire-resisting, and cables through it need the specified seal.
What your quote should include
- The named product and why it was chosen
- Whether primer will be used where the manufacturer specifies it
- The terms of the workmanship guarantee
- Their public liability cover
Fire-rated sealing for Hanwell buildings
London’s office and residential buildings are refitted constantly, and each round of cabling or pipework can leave open penetrations. Where fire-rated sealant is specified, we install it to the tested detail under the building’s permit-to-work arrangements. Hanwell has a good number of hotels close by, all within 2 miles. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close.
Tenant changes at centres like Westway Shopping Park, 2.3 miles to the north of Hanwell, often mean new services through walls between units. Workshops and IT rooms at colleges like Ealing and West London College (1.3 miles east of Hanwell) are re-serviced often, leaving penetrations to seal.
Hanwell is about 1 mile west of Ealing, in Greater London. We cover commercial sites throughout Hanwell, for single jobs and planned programmes alike. Hanwell is one of 764 places we cover in Greater London for service penetrations. Our London page has more on work in that area, about 10 miles away.
Business premises anywhere in W7, W13 and UB2 are within our area for service penetrations. Buildings on Park Road, Green Lane and Felix Road are within our area. With the A4001 nearby, Hanwell is straightforward for us to reach. We also cover West Ealing (1 mile west), Ealing (1 mile east), Dormers Wells (1 mile north-west), South Ealing (1 mile south-east) and Pitshanger (2 miles north-east) for service penetrations. Nearby towns on our patch include London (10 miles east), City of Westminster (8 miles east), Marylebone (8 miles east), Kensington (6 miles east), St Pancras (10 miles east) and Shoreditch (11 miles east).
Near you in Hanwell
We work on buildings around Drayton Manor High School, Cuckoo Schools and Drayton Green. Hanwell has its own railway station: Hanwell station. A little further out are Ealing Hospital (under half a mile west) and Gunnersbury Park House - Large Mansion (2.3 miles east). Not far away are Middle Lake and Castlebar Hill.
For managing agents and facilities managers
Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.
FAQs: Hanwell
Do you seal service penetrations in hotels around Hanwell?
Yes. We install fire-rated and intumescent sealant where it is specified. Each seal follows the tested detail, and rooms are done in turn.
How does the removal of BS 476 from Approved Document B affect fire-rated sealing in Hanwell?
From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.
What’s the quickest route to a quote?
You can use the quote form on this site; alternatively, speak to us on 01277 525 020 or send photos by email. Photos, drawings or a joint schedule help us quote quickly.
Are you CHAS accredited?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.
When can you be on site?
We’re in the office from 8am until 5pm, Monday to Friday. Let us know your site hours and access windows, and the work will be planned around them.
Is the work guaranteed?
Yes. The 12-month guarantee covers our preparation and application, though not damage or work by other trades.
How much does the work cost?
We don’t publish prices, because every site is different. Send photographs or drawings and we’ll price it at a fixed figure.
Different surfaces, different methods
Small ducts
Ducts are only sealed with sealant where the detail allows it. The ductwork, its supports and any dampers are for the ductwork contractor.
Metal pipes
Copper and steel pipes are a common service penetration for fire-rated sealant. Pipe diameter, annular gap, sealant depth and any pipe insulation all have to match the detail.
What sealant work can’t fix
Before quoting, we check that sealant is the right answer. It isn’t the answer for:
- Writing the fire-stopping specification
- Approving the work on behalf of building control
- Reviewing a building’s overall fire safety
If you are not sure, just give us a call on 01277 525 020 or use the quote form and we will give you a straight answer before you book.
Joints and surfaces we work on
- Linear gaps at wall heads
- Pipe penetrations
- Service gaps in risers
- Cable penetrations
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors